About absolootly/docker-redis

• Introduction
• Getting started
  • Installation
  • Quickstart
  • Command-line arguments
  • Persistence
  • Authentication
  • Logs
• Maintenance
  • Upgrading
  • Shell Access

Introduction

This is aDockerfilemethod to create a Docker container image for Redis.

Redis is an open source, BSD licensed, advanced key-value cache and store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets, sorted sets, bitmaps and hyperloglogs.

Getting started

Installation

Automated builds of the image are available on Dockerhub and is the recommended method of installation.

docker pull absolootly/docker-redis:latest

Alternatively you can build the image yourself.

docker build -t absolootly/docker-redis github.com/simontakite/docker-redis

Quickstart

Start Redis using:

docker run --name redis -d --restart=always \
  --publish 6379:6379 \
  --volume /srv/docker/redis:/var/lib/redis \
  absolootly/docker-redis:latest

Alternatively, you can use the sample docker-compose.yml file to start the container using Docker Compose

Command-line arguments

You can customize the launch command of Redis server by specifying arguments to redis-server on the docker run command. For example the following command will enable the Append Only File persistence mode:

docker run --name redis -d --restart=always \
  --publish 6379:6379 \
  --volume /srv/docker/redis:/var/lib/redis \
  absolootly/docker-redis:latest --appendonly yes

Please refer to http://redis.io/topics/config for further details.

Persistence

For Redis to preserve its state across container shutdown and startup you should mount a volume at /var/lib/redis.

The Quickstart command already mounts a volume for persistence.

SELinux users should update the security context of the host mountpoint so that it plays nicely with Docker:

mkdir -p /srv/docker/redis
chcon -Rt svirt_sandbox_file_t /srv/docker/redis

Authentication

To secure your Redis server with a password, specify the password in the REDIS_PASSWORD variable while starting the container.

docker run --name redis -d --restart=always \
  --publish 6379:6379 \
  --env 'REDIS_PASSWORD=redispassword' \
  --volume /srv/docker/redis:/var/lib/redis \
  absolootly/docker-redis:latest

Clients connecting to the Redis server will now have to authenticate themselves with the password redispassword.

Alternatively, the same can also be achieved using the Command-line arguments feature to specify the --requirepass argument.

Logs

By default the Redis server logs are sent to the standard output. Using the Command-line arguments feature you can configure the Redis server to send the log output to a file using the --logfile argument:

docker run --name redis -d --restart=always \
  --publish 6379:6379 \
  --volume /srv/docker/redis:/var/lib/redis \
  absolootly/docker-redis:latest --logfile /var/log/redis/redis-server.log

To access the Redis logs you can use docker exec. For example:

docker exec -it redis tail -f /var/log/redis/redis-server.log

Maintenance

Upgrading

To upgrade to newer releases:

1. Download the updated Docker image:

docker pull absolootly/docker-redis:latest

2. Stop the currently running image:

docker stop redis

3. Remove the stopped container

docker rm -v redis

4. Start the updated image

docker run --name redis -d \
  [OPTIONS] \
  absolootly/docker-redis:latest

Shell Access

docker exec -it redis bash